On 6 July 2011, a Silk Way Airlines Ilyushin Il-76 cargo aircraft on a flight from Baku, Azerbaijan, to Bagram Air Base in Afghanistan, crashed into a mountainside at an altitude of 3,800 metres (12,500 ft) while descending at night towards Bagram. All nine people on board were killed. Despite initial claims by Taliban rebels that they had shot down the aircraft, no evidence was found of external interference, while analysis of the flight recorders suggested the crash was a case of controlled flight into terrain.